Reader sensor structure and its method of construction
    1.
    发明授权
    Reader sensor structure and its method of construction 有权
    读卡器传感器结构及其施工方法

    公开(公告)号:US09337414B2

    公开(公告)日:2016-05-10

    申请号:US13803362

    申请日:2013-03-14

    Abstract: A TMR (tunneling magnetoresistive) read sensor is formed in which a portion of the sensor stack containing the ferromagnetic free layer and the tunneling barrier layer is patterned to define a narrow trackwidth, but a synthetic antiferromagnetic pinning/pinned layer is left substantially unpatterned and extends in substantially as-deposited form beyond the lateral edges bounding the patterned portion. The narrow trackwidth of the patterned portion permits high resolution for densely recorded data. The larger pinning/pinned layer significantly improves magnetic stability and reduces thermal noise, while the method of formation eliminates possible ion beam etch (IBE) or reactive ion etch (RIE) damage to the edges of the pinning/pinned layer.

    Abstract translation: 形成TMR(隧道磁阻)读取传感器,其中包含铁磁自由层和隧道势垒层的传感器堆叠的一部分被图案化以限定窄的轨道宽度,但是合成的反铁磁性钉扎/钉扎层基本上未被图案化地延伸 在基本上沉积的形式中超过限定图案化部分的横向边缘。 图案部分的窄轨道宽度允许高密度记录数据的分辨率。 较大的钉扎/钉扎层显着提高了磁稳定性并降低了热噪声,而形成方法消除了对钉扎/钉扎层边缘的可能的离子束蚀刻(IBE)或反应离子蚀刻(RIE)损伤。

    Reader Sensor Structure and its Method of Construction
    5.
    发明申请
    Reader Sensor Structure and its Method of Construction 有权
    读卡器传感器结构及其施工方法

    公开(公告)号:US20140264665A1

    公开(公告)日:2014-09-18

    申请号:US13803362

    申请日:2013-03-14

    Abstract: A TMR (tunneling magnetoresistive) read sensor is formed in which a portion of the sensor stack containing the ferromagnetic free layer and the tunneling barrier layer is patterned to define a narrow trackwidth, but a synthetic antiferromagnetic pinning/pinned layer is left substantially unpatterned and extends in substantially as-deposited form beyond the lateral edges bounding the patterned portion. The narrow trackwidth of the patterned portion permits high resolution for densely recorded data. The larger pinning/pinned layer significantly improves magnetic stability and reduces thermal noise, while the method of formation eliminates possible ion beam etch (IBE) or reactive ion etch (RIE) damage to the edges of the pinning/pinned layer.

    Abstract translation: 形成TMR(隧道磁阻)读取传感器,其中包含铁磁自由层和隧道势垒层的传感器堆叠的一部分被图案化以限定窄的轨道宽度,但是合成的反铁磁性钉扎/钉扎层基本上未被图案化地延伸 在基本上沉积的形式中超过限定图案化部分的横向边缘。 图案部分的窄轨道宽度允许高密度记录数据的分辨率。 较大的钉扎/钉扎层显着提高了磁稳定性并降低了热噪声,而形成方法消除了对钉扎/钉扎层边缘的可能的离子束蚀刻(IBE)或反应离子蚀刻(RIE)损伤。

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